In recent years, the development of rapid loading techniques (such as dynamic diamond anvil cell, dDAC) and time-resolved detection technologies based on diamond anvil presses has opened up new research directions in high-pressure science. This involves exploring the evolution of material structures...

High pressure phase transition is one of the core concerns in the field of condensed matter physics, Earth and planetary science and material science. And the loading strain rate is an important influencing factor for the kinetics of phase transition. Due to the lack of in situ diagnostics of crysta...

Exploring the influence of size effect on the physical properties of materials under high pressure is helpful for the development of new materials with novel or improved properties. The static compression behaviors of polycrystalline tungsten powder with average grain sizes of 30 and 65 nm under hig...

High-strength steels are widely employed due to their excellent combination of high strength, good ductility, and corrosion resistance. However, they often exhibit significant strain rate sensitivity. In this study, two types of high-strength steels, Ultrafort 401 and Ferrium S53 steels, were invest...

Magnesium is widely used for materials science, aerospace, and military equipment. It is found that the mechanical property of magnesium under deformation loading is closely related to discontinuous dynamic recrystallization. In this work, we construct a dynamic recrystallization phenomenological mo...

In this study, molecular dynamics method was used to simulate the deformation and spallation behavior of [100] single crystal aluminum under the action of equivalent ramp waves and square waves. Accordingly, the correlation between loading waveform and spallation behavior was analyzed. The results s...

The energy caused by atomic level shear in a crystal is called generalized fault energy (GSFE), This is an important material property for describing nanoscale plastic phenomena in crystalline materials, such as dislocation decomposition, nucleation, and twinning. During the shock loading process, t...

Using statistical physical model, the equation of state of UH₃ crystal and its chemical decomposition products were constructed in this paper. The phase diagram of UH₃ at high temperature and high pressure was obtained by Gibbs free energy comparison, and the shock compression properties of UH₃ with...

Polymers are widely used in various fields of national defense and national economy. They are inevitably exposed to extreme conditions of high temperature and high pressure during applying. Thus, it is necessary to study their physical properties and “phase transition” under impact loading. Because ...

For energetic materials, the lattice vibration modes in the 6 THz (200 cm⁻¹) range are very sensitive to structural changes caused by external temperature and pressure changes. Therefore, mid- and far-infrared vibrational spectroscopy can be used as a powerful tool to study high-pressure phase trans...

High pressure neutron diffractometer (HPND), also known as FENGHUANG, at China Mianyang Research Reactor’s (CMRR) neutron science platform, which include neutron focusing system, detector system, high-pressure devices and integrated system, can be constructed to in situ neutron diffraction experimen...

In the large-volume press (LVP), the pressure calibration for the sample chamber is generally carried out by using phase transitions of specific materials with resistance changes. But there are no suitable materials for pressure calibration in the range of 22.5−34.5 GPa. As we know, the mineral 50 m...

Under the conditions of high temperature and high pressure, a series of materials transform into superionic states, which fall between the solid and liquid states and are widely believed to exist in the interior of Earth and exoplanets. Computational research has found that under the temperature and...

An electrochemical accelerated corrosion test was conducted on the Q245R steel sample to simulate the actual corrosion conditions of the carbonization kettle. It was found that corrosion not only causes changes in geometric dimensions, but also causes degradation of the material’s mechanical propert...

The 3D printing manufacturing process and mechanical behaviors of “carbon fiber-graphene” (CF-G) reinforced thermoplastic polyurethane (TPU) composites were investigated. The CF-G reinforced TPU composite filaments were prepared by the screw extrusion process, then the G+CF/TPU composites were manuf...

Based on the LS-DYNA three-dimensional numerical modeling method and the modified Kong-Fang concrete material model, the numerical investigation on damage and failure of ultra-high performance concrete (UHPC) targets subjected to dislocation multi-attacks was carried considering the two-dimensional ...

In order to investigate the effect of HMX content on the impact sensitivity and non-shock initiation reaction characteristics of PBT based propellants, BAM impact sensitivity tests, friability tests and Susan tests were carried out. The experimental results show that with the increase of HMX content...

As highly efficient absorbing and dissipating materials, porous materials were widely used in the study of detonation wave attenuation. In order to further explore the mechanism of explosion suppression by porous materials, the effects of typical flexible (sponge) and rigid (wire mesh) porous materi...

To effectively predict slope stability and prevent slope instability occurrence, a hybrid model WOA-RF, combining whale optimization algorithm (WOA) and random forest (RF) was proposed. Based on the collected slope cases, the classification and generalization performance of the model was evaluated a...